My comment:
(a) Until today I had not heard of 马楠.
(b) There were at least two reports about her.
(i) 北大反美姑娘马楠近况. 大家论坛, Aug. 13, 2005.
http://tieba.baidu.com/f?kz=82484858
(ii) 彭苏, 北大中文系“反美”女生马楠的真实近况(组图). 南方人物周刊, Apr. 19
, 2006.
http://news.xinhuanet.com/society/2006-04/19/content_4447992.htm
(iii) 彭苏. 南方人物周刊, June 14, 2006.
http://news.xinhuanet.com/overseas/2006-06/14/content_4694442.htm
(c) Even if she was indeed a communist while a college student in China, I
will not fault her for what she has become. People are no programmed robots,
but rather capable of taking in new ideas and making own decisions.